Description

Polymer80 AR15 80% Receiver w/ Jig Kit

If you have been looking to take your build from a concept to something you can actually hold, the Polymer80 AR15 80% Receiver w/ Jig Kit is the starting point that makes sense. This kit strips away the guesswork and hands you the core components you need to mill out your own lower receiver at home. Whether you are a first-time builder or a seasoned hobbyist, this specific kit is designed to get you through the critical machining phase without the usual headaches. It is a true hands-on project that puts the quality control in your hands, and it starts with this exact kit.

Overview

This is not just a raw block of polymer. The Polymer80 AR15 80% Receiver w/ Jig Kit includes the unfinished lower receiver along with the necessary jig, drill bits, and end mill to complete the pocket and trigger group cuts. The receiver itself is constructed from a high-impact, glass-reinforced polymer that holds up to standard AR15 parts kits and buffer tubes. Because it is an 80% receiver, it is not considered a firearm by the ATF until you complete the machining. This kit gives you the freedom to build a rifle that is truly your own, using your own tools and your own time. The included jig is a critical part of the package, as it provides the precise guide needed to make clean, repeatable cuts without wandering off the intended path.

Features & Specs

The Polymer80 AR15 80% Receiver w/ Jig Kit is built around a few key design choices that make the process more straightforward. The receiver uses a standard AR15 trigger group and magazine catch, so you are not locked into proprietary parts. The jig itself is made from a durable, machined aluminum plate that clamps securely to the receiver, reducing the chance of slipping during the milling process. Here are the primary specifications and what you can expect from the kit:

• Manufacturer: Polymer80. The receiver is molded from a proprietary polymer blend that resists impact and temperature changes better than standard nylon-based frames.
• Category: Build Kits. This includes the 80% lower receiver, the modular jig system, a drill bit, and an end mill. You will need a drill press or a handheld router to complete the cuts.
• Compatibility: Accepts all standard AR15 small parts, including trigger groups, grips, and buffer tubes. It is designed to work with most aftermarket accessories without modification.

Beyond the basic specs, the jig itself is worth noting. It features a bottom plate that holds the receiver in place and a top plate that guides your tooling. The alignment pins ensure the receiver sits square every time. If you have ever worked with a cheaper jig, you know how frustrating a misaligned cut can be. This kit addresses that directly.

Who It Is For

This kit is for the builder who wants to learn the process without investing in expensive CNC equipment. It is ideal for someone who already owns a basic drill press or a router and has a workspace where they can clamp things down securely. If you enjoy the mechanical aspect of assembling a firearm from the ground up, the Polymer80 AR15 80% Receiver w/ Jig Kit will give you that satisfaction. It is also a solid choice for someone who wants to understand exactly how the lower receiver functions, because you will be cutting the fire control pocket yourself. This is not a kit for someone looking for a quick, drop-in part. It requires patience, attention to detail, and a willingness to follow the instructions closely. But for the right person, it is one of the most rewarding builds you can do.

Shipping & FFL

Because this is an 80% receiver, it is not classified as a firearm under federal law. That means it can be shipped directly to your home or business address without going through a Federal Firearms License (FFL) dealer. No background check is required at the time of purchase. However, once you complete the machining and assemble it into a functional firearm, you are responsible for complying with all applicable federal, state, and local laws. Some states and municipalities have specific restrictions on the possession or completion of 80% receivers. It is your responsibility to verify the legality of this purchase and the subsequent build in your jurisdiction. We do not provide legal advice, and we strongly recommend you consult with local authorities or an attorney if you have any questions regarding the legality of this product where you live. By purchasing this kit, you acknowledge that you are the final manufacturer of the firearm and that you will comply with all laws regarding its construction, ownership, and transfer.